Skeeve Stevens wrote:
Hmmmm.. is this a good thing? I realise that few people go back for more ASN's after their initial one, but we are requesting them regularly for customers. What is the situation with carriers accepting them. Could a few transit providers on these lists comment on whether they are ready to handle 4byte AS Numbers in their BGP products.
There is a 'compatibility mode' - someone who does not understand the 4-byte world can build a session facing AS23456, and the adjacency will work. Of course, the carrier will end up with a lot of sessions facing 23456 which shall make debugging hard, but ultimately since most vendors support 4 byte ASN, then they should have an upgrade plan. :-) There will be the requirement to renumber the adjacency after upgrade too... Since the AS4_PATH attribute is transitive, then 16-bit-only transit networks will not destroy the 4-byte as path for other 32-bit speakers. Andy